【C#】C# TreeView操作

1、更改树节点

/// <summary>
        /// 更改树节点
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void tree_Solution_AfterLabelEdit(object sender, NodeLabelEditEventArgs e)
        {
            string selected_node_path_without_node_name = Regex.Match(selectTreeNodeFullPath(), @"[\S\s]*\\").Value;
            string full_path = null;
            full_path = Path.GetFullPath(selected_node_path_without_node_name + "\\" + e.Label);
            if (e.Label != null)
            {
                treeNodeNameChanged(full_path);
                addToRootPaths(full_path);
                if (e.Label.LastIndexOf(".") + 1 != 0)
                {  
                    string ext = e.Label.Substring(e.Label.LastIndexOf(".") + 1, (e.Label.Length - e.Label.LastIndexOf(".") - 1));
                    setTreeSolutionImageIndex(ext, tree_Solution.SelectedNode);
                }
            }            
        }

2、树节点重命名

/// <summary>
        /// 树节点重命名
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void treeNodeNameChanged(string newNodePath)
        {
            try
            {
                FileInfo fileInfo = new FileInfo(selectTreeNodeFullPath());
                fileInfo.MoveTo(newNodePath);
            }
            catch (Exception exception)
            {
                MessageBox.Show(exception.Message, "异常消息提示：", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }  
             
        }

3、获取树形目录

/// <summary>
        /// 获取树形目录
        /// </summary>
        /// <param name="path"></param>
        public void getTreeViewData(string path)
        {
            TreeNode root = new TreeNode();
            //root.Text = "MyTest";
            getFiles(path, root);
            tree_Solution.Nodes.Add(root);
            if (root.Text == "site-packages")
            {
                root.ImageIndex = 2;
                root.SelectedImageIndex = 2;
            }
            else
            {
                root.ImageIndex = 4;
                root.SelectedImageIndex = 4;
            }
            this.KeyPreview = true;
        }

 /// <summary>
        /// 从树形目录中读取文件，对应生成树形节点
        /// </summary>
        /// <param name="filePath"></param>
        /// <param name="node"></param>
        private void getFiles(string filePath, TreeNode node)
        {
            try
            {
                if (filePath == null || filePath == "")
                {
                    
                }
                else
                {
                    DirectoryInfo folder = new DirectoryInfo(filePath);
                    node.Text = folder.Name;
                    node.Tag = folder.FullName;
                    node.ImageIndex = 5;
                    FileInfo[] chldFiles = folder.GetFiles("*.*");
                    foreach (FileInfo chlFile in chldFiles)
                    {
                        if (!chlFile.Name.StartsWith(".") && chlFile.Name != "workspace" && chlFile.Name != "__pycache__" && !chlFile.Name.StartsWith( "__runner"))
                        {
                            TreeNode chldNode = new TreeNode();
                            chldNode.Text = chlFile.Name;
                            chldNode.Tag = chlFile.FullName;
                            string ext = chlFile.Name.Substring(chlFile.Name.LastIndexOf(".") + 1, (chlFile.Name.Length - chlFile.Name.LastIndexOf(".") - 1));
                            node.Nodes.Add(chldNode);
                            setTreeSolutionImageIndex(ext,chldNode);                                                                                     
                        }
                    }

                    DirectoryInfo[] chldFolders = folder.GetDirectories();
                    foreach (DirectoryInfo chldFolder in chldFolders)
                    {
                        if (!chldFolder.Name.StartsWith(".") && chldFolder.Name != "workspace" && chldFolder.Name != "__pycache__")
                        {
                            TreeNode chldNode = new TreeNode();
                            chldNode.Text = folder.Name;
                            chldNode.Tag = folder.FullName;
                            node.Nodes.Add(chldNode);
                            getFiles(chldFolder.FullName, chldNode);
                        }
                    }
                }               
            }
            catch(Exception exception)
            {
                MessageBox.Show(exception.Message, "异常消息提示：", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
        }